package com.skzh.web.controller.common;

import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import com.skzh.common.config.SkzhConfig;
import com.skzh.common.constant.Constants;
import com.skzh.common.core.domain.AjaxResult;
import com.skzh.common.utils.StringUtils;
import com.skzh.common.utils.file.FileUploadUtils;
import com.skzh.common.utils.file.FileUtils;
import com.skzh.framework.config.ServerConfig;

/**
 * 通用请求处理
 *
 * @author skzh
 */
@RestController
@RequestMapping("/common" )
public class CommonController {
    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";

    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete   是否删除
     */
    @GetMapping("/download" )
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 " , fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_" ) + 1);
            String filePath = SkzhConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
        } catch (Exception e) {
            log.error("下载文件失败" , e);
        }
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload" )
    public AjaxResult uploadFile(MultipartFile file) throws Exception {
        try {
            // 上传文件路径
            String filePath = SkzhConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url" , url);
            ajax.put("fileName" , fileName);
            ajax.put("newFileName" , FileUtils.getName(fileName));
            ajax.put("originalFilename" , file.getOriginalFilename());
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求kmz
     * MultipartFile 是 Spring 框架中用于处理文件上传的一个接口，它位于 org.springframework.web.multipart 包中。
     * 这个接口提供了一系列方法，用于操作上传的文件，包括获取文件名、文件大小、文件内容类型等信息，以及将文件保存到指定位置。
     * 接口不能直接作为属性，但在方法参数中使用接口类型是非常常见的。这样做的好处是，方法可以接受任何实现了该接口的类的实例。这增加了代码的灵活性和扩展性。
     */
    @PostMapping("/uploadKmz")
    public AjaxResult uploadFileKmz(MultipartFile file) throws Exception {
        try {
            // 上传文件路径
            String filePath = SkzhConfig.getUploadPath();  // D:/skzh/uploadPath/upload

            // 获取原始文件名
            String originalFilename = file.getOriginalFilename();  //昼间巡检.kmz
            // 如果文件扩展名是.kmz，将其改为.zip
            // String fileName = originalFilename;
            // if (originalFilename.toLowerCase().endsWith(".kmz")) {
            //     fileName = originalFilename.substring(0, originalFilename.length() - 4) + ".zip";
            // }

            // 允许的文件扩展名
            String[] allowedExtensions = {"bmp", "gif", "jpg", "jpeg", "png", "doc", "docx", "xls", "xlsx", "ppt", "pptx",
                    "html", "htm", "txt", "rar", "zip", "gz", "bz2", "mp4", "avi", "rmvb", "pdf", "kmz"};

            // 上传并返回新文件名称
            String uploadedFileName = FileUploadUtils.upload(filePath, file, allowedExtensions);
            String url = serverConfig.getUrl() + uploadedFileName;  //http://localhost:8280/profile/upload/2025/05/27/昼间巡检_20250527164016A001.kmz

            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", url);
            ajax.put("fileName", uploadedFileName);
            ajax.put("newFileName", FileUtils.getName(uploadedFileName));
            ajax.put("originalFilename", originalFilename);
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads" )
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception {
        try {
            // 上传文件路径
            String filePath = SkzhConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files) {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = AjaxResult.success();
            ajax.put("urls" , StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames" , StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames" , StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames" , StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource" )
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 " , resource));
            }
            // 本地资源路径
            String localPath = SkzhConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/" );
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败" , e);
        }
    }
}
